Abstract: A holder for attachment to the underside of a vehicle bodywork for use as a suspension seating. The holder consists of a twin-chambered, extruded aluminum section, which is generally L-shaped in cross-section, and includes a first substantially upright box section which forms the support arm, and a second substantially horizontal box section which forms the support seating surface. The upright support arm is secured, preferably by welding, to a longitudinal support member of the vehicle bodywork. The L-bend region of the support arm includes an internal connecting ridge member which further stiffens the holder in the direction of loading. The bottom seating surface is provided with a relief portion for receiving the protruded end associated with a car jack, a straightening bench, a transport frame, etc. In accordance with the method aspect of the invention, the holders are cut at predetermined section widths from a single extrusion such that both left side and right side holders are made from one extrusion.